<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8"
          ><el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            @clear="getUserList"
            clearable
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button> </el-input
        ></el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRoles(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="dialogVisible"
      width="30%"
      @close="closeDialog"
    >
      <!-- 内容主题区域 -->
      <el-form
        label-width="70px"
        :model="addInfo"
        :rules="addInfoRules"
        ref="addInforRef"
      >
        <!-- 用户名 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addInfo.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item label="密码" prop="password">
          <el-input v-model="addInfo.password"></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addInfo.email"></el-input>
        </el-form-item>
        <!-- 手机 -->
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addInfo.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="addUser">确 定</el-button>
        <el-button @click="dialogVisible = false">取 消</el-button>
      </span>
    </el-dialog>

    <!-- 编辑用户的对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="dialogVisible1"
      width="30%"
      @close="editDialogClose"
    >
      <el-form
        ref="editInfoRef"
        :model="editInfo"
        label-width="70px"
        :rules="editInfoRules"
      >
        <el-form-item label="用户名">
          <el-input v-model="editInfo.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editInfo.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editInfo.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
        <el-button @click="dialogVisible1 = false">取 消</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="editRolesDialog"
      width="40%"
      @close="setRoleDialogClose"
    >
      <div>
        <p>当前的用户: {{ userInfo.username }}</p>
        <p>当前的角色: {{ userInfo.role_name }}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRolesDialog = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail =
        /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/;
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb();
      }
      cb(new Error("请输入合法邮箱"));
    };
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regmobile = /^[1][3,4,5,7,8][0-9]{9}$/;
      if (regmobile.test(value)) {
        // 合法的手机号
        return cb();
      }
      cb(new Error("请输入合法手机号"));
    };
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: "",
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      userList: [],
      total: 0,
      // 对话框的显示隐藏
      dialogVisible: false,
      dialogVisible1: false,
      // 添加用户的表单数据
      addInfo: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加表单的验证规则对象
      addInfoRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度在3~10个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "用户名长度在6~15个字符",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      // 修改表单的验证规则对象
      editInfoRules: {
        email: [
          { required: true, message: "请填写修改后的邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请填写修改后的手机号", trigger: "blur" },
        ],
      },
      // 查询到的用户信息对象
      editInfo: {},
      // 分配角色对话框显示与隐藏
      editRolesDialog: false,
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 选中的角色ID
      selectedRoleId: "",
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("/users", {
        params: this.queryInfo,
      });
      if (res.meta.status == !200)
        return this.$message.error("获取用户数据失败");
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 监听switch开关状态改变
    async userStateChanged(newInfo) {
      const { data: res } = await this.$http.put(
        `users/${newInfo.id}/state/${newInfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        newInfo.mg_state = !newInfo.mg_state;
        return this.$message.error("更新用户数据失败");
      }
      this.$message.success("更新用户数据成功");
    },
    // 监听添加用户添加对话框关闭事件
    closeDialog() {
      this.$refs.addInforRef.resetFields();
    },
    // 点击确定添加用户
    addUser() {
      this.$refs.addInforRef.validate(async (value) => {
        if (!value) return;
        // 发起添加用户的网络请求
        const { data: res } = await this.$http.post("users", this.addInfo);
        if (res.meta.status !== 201) return this.$message.error("添加用户失败");
        this.$message.success("添加用户成功");
        // 影藏对话框
        this.closeDialog();
        // 重新获取用户数据列表
        this.getUserList();
      });
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      this.dialogVisible1 = true;
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200)
        return this.$message.error("编辑用户信息失败");
      this.editInfo = res.data;
    },
    // 监听修改用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editInfoRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editInfoRef.validate(async (value) => {
        if (!value) return;
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "users/" + this.editInfo.id,
          { email: this.editInfo.email, mobile: this.editInfo.mobile }
        );
        if (res.meta.status !== 200) return this.$message.error("修改数据失败");
        this.getUserList();
        this.$message.success("修改数据成功");
        this.dialogVisible1 = false;
      });
    },
    // 删除用户信息（通过id）
    async removeUserById(id) {
      const a = await this.$confirm(
        "此操作将永久删除该用户，是否继续？",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      // 取消删除
      if (a !== "confirm") {
        return this.$message.info("已取消删除");
      }
      // 确认删除，发送请求
      const { data: res } = await this.$http.delete("users/" + id);
      if (res.meta.status !== 200) return this.$message.error("删除失败");
      this.$message.success("删除成功");
      this.getUserList();
    },
    // 展示分配角色的对话框
    async setRoles(userInfo) {
      this.editRolesDialog = true;
      this.userInfo = userInfo;
      // 获取所有角色的列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200)
        return this.$message.error("获取角色列表失败");
      this.rolesList = res.data;
    },
    // 点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId)
        return this.$message.error("请选择要分配的角色");
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId,
        }
      );
      if (res.meta.status !== 200) this.$message.error("为用户设置角色失败");
      this.getUserList();
      this.editRolesDialog = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClose() {
      this.selectedRoleId = "";
      this.userInfo = "";
    },
  },
};
</script>

<style lang='less' scoped>
</style>
